It is therefore important to understand this pest and know how to deal with it should the situation arise. Registered in England No. This means that, if you are unlucky, numbers of the pest in the soil can increase over several years. Thank you so much for this information. Your email address will not be published. Here are our picks for the best grub killers. The chafer’s life cycle is one year. Adult Chafers are medium-sized reddish brown beetles about 13-15mm long. Figure 4. John Rouine, Superintendent at Lahinch explained, "They have never been this big a problem before. The ground staff applied Nemasys G from one of their boom sprayers on a rainy day in September 2007. They are highly attracted to lights, and are frequently observed around windows or porch lights. Annual white grubs, Cyclocephala spp., complete their life cycle in one year. It can be applied at any time of year, however, maximum control is achieved with an application prior to egg laying during spring or early summer, when the adult beetles are active. more information Accept. They mate on nearby trees and shrubs until dawn, at which point the adults return to the soil. Larvae continue to feed until late September when they move deeper into the soil to over-winter. Various products are available such as ‘Nemasys G’. Can you destroy the eggs before they hatch? I have seen the damage it makes. Adult chafer beetles can live several weeks and can fly many miles in search of mates and feeding grounds. Northern masked chafer grub raster. When it is ready, the outer shell cracks and the adult beetle emerges. Your email address will not be published. Adult beetles mate and lay their eggs in the soil in April, May and June. The chafer beetle’s life cycle. Based in Exeter, UK, By continuing to use the site, you agree to the use of cookies. The imago (adult) stage is only 1–2 weeks long, with adult beetles growing to approximately 13–14 millimetres (0.51–0.55 in) in length. Read our blog post for more information. This makes your lovely lawn a prime target for a chafer beetle infestation. In Harmony does not recommend you apply any systemic insecticides or other chemicals. The two main species found in turf (in appreciably large numbers) are the Garden Chafer and the Cockchafer. First, some facts about beetles in general. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. We are extremely concerned about the Covid 19. Both leatherjackets and chafer grubs attack grass roots resulting in slow growth and yellow patches. Although treatment can help in early times in the season, July is the most optimal time to apply your treatment. As they age they turn a more grey colour. Read on to find out more. A Damage to lawns first appears as yellowing leaves and sparse growth. Your email address will not be published. In order to ensure the treatment and the extemination of the beetle, it is recommended to apply multiple treatments to your lawn or garden. The beetle’s most susceptible time is when it is the egg form in late July. Then, after a lengthy period of growth, these grubs pupate and the transform into their adult forms and take to the air to mate. If you liked it, please feel free to share! An, There seems to be a lot of interesting slime mould, Found this beautiful little mushroom today. Chafer grubs are widely distributed across most of the UK. They are tiny and there is no pesticides to do so. One of these scarab beetles, the dung beetle Scarabaeus sacer was held sacred by the Ancient Egyptians, as a symbol of Khepri (a ‘subordinate’ of the sun god Ra) whose job was to roll the morning sun across the sky!. If food is sufficient, the first instar matures in three weeks and the second instars take a further four weeks to mature.The third instars which can grow to 17mm when fully grown feed for a period in the autumn before moving down into the soil for the winter. The grubs eat away at the roots of plants and other organic matter in the soil. Adults are tan, about 5/8 inch long, and have a dark, mask-like marking over the eyes. Eggs are laid into the soil which hatch into small white grubs. Adult beetles emerge from their pupal cases and begin to fly at dusk from late May to June. Knowing the life cycle of the chafer beetle helps illustrate is when the beetle is most susceptible to treatment which will help exterminate the pest. Chafer beetles appear to be spreading in our region. In order to ensure the treatment and the extermination of the beetle, it is recommended to apply multiple treatments to your lawn or garden. We do recommend beneficial nematodes and can apply them for you. If moisture levels are good the larvae move up toward the surface and begin to feed on plant roots. Female chafer beetles lay between 20–40 eggs over their lifespan; the eggs are laid about 5–10 centimetres (2.0–3.9 in) deep in moist soil, and then take 2 weeks to hatch. In frost zones, the grubs feed until November and then move deeper into the soil. Grubs die within 10-14 days. Not only do the larvae feed on roots, wreaking havoc on lawns, but they attract local fauna like crows, foxes, and raccoons, who dig up the grass in search of the grubs. Grass is easily pulled up, with little or no root. The beetles come out of the ground at about 8:30 pm, mate through the night, and then return to the soil before the sun rises; they may return to the trees to mate again several times over the mating period. The large grubs of the chafer feed on the roots of both wild and cultivated cool-latitude grasses, which has made them a critter-non-grata on North American lawns. #sli, Testing my new toy. The larvae are c-shaped, white grubs with a small black head. Imidacloprid breaks down in strong sunlight, thus application should take place towards the end of the day if possible. She will then re-emerge, feed and then lay another batch of eggs. Preventing the birds from feeding would not have solved the problem as, by not reducing the grub numbers, they would likely just return the following year in even higher numbers. Cool or rainy nights greatly reduce flight and mating One application might kill the older, more active grubs that are close to the surface but chances are there will be younger grubs hiding deeper in the soil. Lahinch Golf Club experienced heavy infestations of Chafer Grubs (confirmed as Phyllopertha horticola by the STRI), and several fairways and large areas were dug up by crows and starlings. P: 425.486.2180 Although treatment can help in early times in the season, July is the most optimal time to apply your treatment. Content copyright © 2011-2020 The Lawn Man. as re-seeding, could begin. Order Nemasys Chafer Grub Killer online or by contacting your local Everris distributor. The European chafer beetle originated in continental Europe but is now an invasive species found in temperate climates in North America, where they are often called June bugs. They may also be noticeable when large numbers of them burrow into animal manure, often pulverising and burying it. Some degree of biological control can be achieved with entomopathogenic nematodes (EPN’s – nematodes that are pathogenic to insects), applied between June to August when the soil is warm enough to sustain them. They are very different to the other main lawn pest, leatherjackets. The chafer beetle’s life cycle. The chafer beetle life cycle is such that several generations can live in one patch of soil at the same time. On the Old Course a number of fairways were affected along a number of tee boxes on the Castle Course. Pupation then occurs in mid-May 50 to 150mm into the soil. Large brown patches can appear, especially in dry weather, where chafer grubs have cut or eaten a significant proportion of the roots. Grubs are the larval stage of the common May or June beetle or the Southern masked chafer. Chafer beetles emerge from lawns and lay eggs, which hatch into grubs feeding. Save my name, email, and website in this browser for the next time I comment. By June, the new beetles begin emerging from the ground. All rights reserved. The large grubs of the chafer feed on the roots of both wild and cultivated cool-latitude grasses, which has made them a critter-non-grata on North American lawns. They usually emerge over a period of about a week and some years can swarm all together. We would be happy to work with you to deal with the chafer beetle in your lawn. Required fields are marked *, https://www.denbow.com/wp-content/uploads/2017/06/life-cycle-of-the-chafer-beetle-feature-image-1-26-o.jpg, https://www.denbow.com/wp-content/uploads/2020/03/denbowipema.png. We have the June Bug in our Bothell houses lawn. Life-cycle and growth habits. Imidacloprid is a systemic insecticide that translocates rapidly through plant tissues following application and is effective by contact or ingestion. We hope you enjoy the article and download the infographic (at the bottom). By: Cleveland Van Cecil 21 September, 2017. grass image by green308 from Fotolia.com. They are particularly common on light sandy and chalky soils in non-irrigated turf such as golf roughs, fairways and ornamental turf. Adults are normally present from late June through July. Professional treatments and independent advice for your lawn. General Life History. The large grubs of the chafer feed on the roots of both wild and cultivated cool-latitude grasses, which has made them a critter-non-grata on North American lawns. The pre-pupal stage lasts 2–4 days and the pupal stage lasts 2 weeks. Feb 20, 2020 | Lawn Care, Pest Control | 2 comments. Damage is usually most evident in August and September. This site uses Akismet to reduce spam. Life Cycle of the European Chafer Beetle.
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